The new service is super easy to use. Just take a file of a type supported by Zamzar, add it as an attachment in an email, and send it to format@zamzar.com, where format is the format you want to convert to. So, if you were converting a PNG file to JPG, you'd attach your PNG in an email to jpg@zamzar.com. This works with images, documents, music, ebooks, and even videos.

Unfortunately, unless you have a paid account on Zamzar, you only have a 1MB limit for files sent over email. It's still more than enough for a basic image or document conversion, though, and it's great for use on smartphones. If someone sends you an iWork file, for example, and you can't open it on your Android phone, just forward the email to doc@zamzar.com and you'll get an Office-compatible file that you can open anywhere. Check out their FAQ for more information about the new service.